"Driver" makefile to convert all documents to SGML or XML at once.

Doc/tools/sgmlconv/Makefile

+# Simple makefile to control SGML generation for the entire document tree.
+# This should be used from the top-level directory (Doc/), not the directory
+# that actually contains this file:
+#
+#  $ pwd
+#  .../Doc
+#  $ make -f tools/sgmlconv/Makefile
+
+TOPDIR=.
+TOOLSDIR=$(TOPDIR)/tools
+
+SGMLRULES=../$(TOOLSDIR)/sgmlconv/make.rules
+SUBDIRS=api ext lib mac ref tut
+
+all:	sgml
+
+.PHONY: sgml xml
+
+sgml:
+	for DIR in $(SUBDIRS) ; do \
+	    (cd $$DIR; \
+	     $(MAKE) -f $(SGMLRULES) TOOLSDIR=../$(TOOLSDIR) sgml) \
+	done
+
+xml:
+	for DIR in $(SUBDIRS) ; do \
+	    (cd $$DIR; \
+	     $(MAKE) -f $(SGMLRULES) TOOLSDIR=../$(TOOLSDIR) xml) \
+	done